Using BrowseTriangles() in a C# addin

Does anyone know how to use or where I can find some documentation on the BrowseTriangles() function from the Bentley.Civil.DTM.DTM object.

Bentley.Civil.DTM.

DTM tin = Bentley.Civil.DTM.DTM.ImportFromGeopakTinFile(textTinFile.Text);

tin.BrowseTriangles(Bentley.Civil.DTM.

TrianglesBrowsingCriteria criteria, Bentley.Civil.DTM.DynamicFeaturesBrowsingDelegate hdlP, object oArg);

I need to export the triangles to an ASCII format, but can find no help on any of the components required by this command.

Thanks, Micheal